Cutter-head.



H. HODAPP.

CUTTER HEAD.

ATION FILED JUNE 24. 19

APPLIC Patented Apr. 22, 1919.

HENRY HODAPP, OF SEYMOUR, INDIANA, ASSIGNOR OF ONE-HALF TO EDWARD A. HIGGINS, OF NORTH VERNON, INDIANA.

CUTTER-HEAD.

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed June 24, 1916. Serial No. 105,660.

To all whom it may concern: Be it known that I, HENRY HODAPP, a citi- 'zen of the United States, residing at Seyset to work for cutting at different depths or for either direction of rotation of the cutter head, and in which the bits may be continually resharpened as the cutting edges thereof wear away without altering the degree or shape of said edges.

A further purpose of the invention is to provide bits for the cutter head which are designed to cut smoothly when working with or against the grain, to afford room for the escape of shavings, and wherein the mountings for the bits are such that only the active cutting edges will engage, the material and the remaining bit portions be given full clearance from the piece being worked.

With these and other objects in View, the invention consists in the arrangement and combination of parts hereinafter claimed, and while the invention is not restricted to the exact details shown and described, still for the purpose of disclosure reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which:

Figure 1 is a side elevation of the rotary cutter head,

Fig. 2 a transverse sectional view thereof, taken on the line 2-2 of Fig. 1,

Fig. 3 a longitudinal sectional view thereof, taken on the line 3-3 of Fig. 2,

Fig. 4 a detail perspective view of one of the bits, and

Fig. 5 a central sectional view of a modified form of cutter head.

Referring to the construction in detail, 1 designates a collar mounted on the shaft 2 and constructed with an extended shank portion 3 that receives a clamping plate 4} that is secured thereon by the nut 5, or in any other appropriate manner.

A pair of segmental bits 6 is located between said collar and the clamping plate, after the manner shown in Fig. 3, in. which position said bits are adapted for adjustment and secured for working through the medium of the nut 5 engaging with the clamping plate. The face 7, of the collar 1, has formed therein two intersecting and eccentrically disposed grooves 8, as shown in Fig. 2, and which receive the complementary shaped ridges or projecting portions 9 that are formed integrally with the pair of bits 6. The axes of said grooves 8 are disposed in alinement with the axis of the collar 1 and said clamping plate 1. Said bits are adapted to be angularly adjusted with respect to the grooves 8 of the collar, or eccentrically with respect to the collar edge, thereby settingthe cutting edges 10 of the bits for cutting at the desired depth, and leaving the body of the bit in position for complete clearance of the piece that is being worked. The location of the grooves 8 on the collar will allow of the bits 6 being set to operate for cutting in either direction of rotation of the cutter head. Bylocating each groove 8 with its respective axis on one side of the axis of the shank or collar the maximum range of angular adjustment is obtained for each cutter 6; i. e. a greater degree of eccentricity is secured by having each groove with its center on one side of the collar axis as distinct from having said groove and its axis disposed on opposite sides thereof.

In the modified arrangement shown in Fig. 5, the construction is the same as that just described, except that each of the pair of bits .11 is formed with two ridges 9 and 12 in the opposite faces thereof that engage respectively within the two pairs of grooves 8 and 13 formed in the collar 1 and clamping plate 4:. This construction of the cutter head is adapted for extra heavy work, but for ordinary purposes, the type of cutter head shown in Fig. 3 is preferred.

The grooves 8 each constitute the larger part of a circle, the centers of which circles are equi-distant from and on opposite sides of the axis of shank 3. Said grooves intersect and cut into the other at their sides opposite the axis of the shank 3. The grooves and also the ridges or projections 9 on the bits which engage therewith are formed with tapered engaging faces so that when the ridges are driven into the grooves under the pressure of the clampingv nut 5, their faces will tightly impinge and, hold the bits against the thrust of the Work, thus enabling the bits tobe clamped firmly in any position to" which they may be adjusted in said grooves. It will thus be seen that any slid ing adjustment of the bits in the grooves, which are eccentric to the shank 3 and collar 1, Will move the outer edge of the bit in or out in relation to said parts according to the direction in which the sliding movement or adjustment is made. It will also be seen that the intersection, or cutting of the grooves across each other at their meeting ends, permits the bits when slid to the inner most limit of their adjustment to bear against the shank at their inner corners which furnishes a solid abutment for said inner corners throughout the height of the bit or the distance between: the collar 1 and clamping plate 4:. The bits may be made of any shape or size for cutting different stock and they may be ground on either or both edges accordingly as the operator clesires to work. The contour of the cutting edge of each bit is such that the cil-tters may operate either with or against the grain, and sufficient clearance is left for an easy discharge of the shavings;

' Having thus fully described my said invention', what I claim as new and desire to copies'ot this Patent may be obtained-for fiye e-nts each, by addressing t commissioner Washington-17. 0. V V V "and sixteen.

2. A cutter-head comprising a collar hav- 1 ing two eccentrically disposed grooves each of which is formedwith its axis equi-distant from and 011 opposite side's'of the axis of the cutter-head and with -their inner ends intersecting and cutting across each other,

a shank passing centrally through said collar, and segmental bits formed with ridges adapted to slidably fit-wi thin' said grooves and to be adjusted in or outoby sliding in said grooves,- the inner'edge of eachbit when" in itsinnermost position being adapted to abut against said: shank, substantially as set forth. 7

In testimony whereof, I have hereunto set my Brand and seal at Seymour, Indianathis 21st day or June, A, D.nineteen hundred HENRY H'ODAPP; as

Witnesses:

Henna; Vo'ss,

CARR BRANAMAN.

of Yatents, 

